// Copyright 2013 Google Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//      http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

goog.require('axs.AuditRule');
goog.require('axs.constants.Severity');

/**
 * @type {axs.AuditRule.Spec}
 */
axs.AuditRule.specs.linkWithUnclearPurpose = {
    name: 'linkWithUnclearPurpose',
    heading: 'The purpose of each link should be clear from the link text',
    url: '',
    severity: axs.constants.Severity.WARNING,
    relevantNodesSelector: function(scope) {
        return scope.querySelectorAll('a');
    },
    test: function(anchor) {
        // This only looks for "click here" in a link's content. Not
        // comprehensive, but should catch the worst case.
        return (/^\s*click\s*here\s*[^a-z]?$/i).test(anchor.textContent);
    },
    code: 'AX_TITLE_01'
};
